Equilibrium onions?

L Ramos, Didier Roux, P D Olmsted, M E Cates

Research output: Contribution to journalArticlepeer-review


We demonstrate the possibility of a stable equilibrium multi-lamellar ("onion") phase in pure lamellar systems (no excess solvent) due to a sufficiently negative Gaussian curvature modulus. The onion phase is stabilized by non-linear elastic moduli coupled to a polydisperse size distribution (Apollonian packing) to allow space-filling without appreciable elastic distortion. This model is compared to experiments on copolymer-decorated lamellar surfactant systems, with reasonable qualitative agreement.

Original languageEnglish
Pages (from-to)888-894
Number of pages7
JournalEurophysics Letters
Issue number6
Publication statusPublished - Jun 2004


Dive into the research topics of 'Equilibrium onions?'. Together they form a unique fingerprint.

Cite this